TWI545955B - Signal receiving apparatus and method, a signal transmission apparatus and method, and program - Google Patents

Signal receiving apparatus and method, a signal transmission apparatus and method, and program Download PDF

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Publication number
TWI545955B
TWI545955B TW101110904A TW101110904A TWI545955B TW I545955 B TWI545955 B TW I545955B TW 101110904 A TW101110904 A TW 101110904A TW 101110904 A TW101110904 A TW 101110904A TW I545955 B TWI545955 B TW I545955B
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TW
Taiwan
Prior art keywords
content
information
download
trigger information
transmitted
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TW101110904A
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Chinese (zh)
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TW201246931A (en
Inventor
Jun Kitahara
Naohisa Kitazato
Yoshiharu Dewa
Yasuaki Yamagishi
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Sony Corp
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Application filed by Sony Corp filed Critical Sony Corp
Publication of TW201246931A publication Critical patent/TW201246931A/en
Application granted granted Critical
Publication of TWI545955B publication Critical patent/TWI545955B/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/434Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
    • H04N21/4348Demultiplexing of additional data and video streams
    • H04N21/4349Demultiplexing of additional data and video streams by extracting from data carousels, e.g. extraction of software modules from a DVB carousel
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04HBROADCAST COMMUNICATION
    • H04H20/00Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/40Arrangements for broadcast specially adapted for accumulation-type receivers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04HBROADCAST COMMUNICATION
    • H04H20/00Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/86Arrangements characterised by the broadcast information itself
    • H04H20/93Arrangements characterised by the broadcast information itself which locates resources of other pieces of information, e.g. URL [Uniform Resource Locator]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04HBROADCAST COMMUNICATION
    • H04H60/00Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
    • H04H60/09Arrangements for device control with a direct linkage to broadcast information or to broadcast space-time; Arrangements for control of broadcast-related services
    • H04H60/13Arrangements for device control affected by the broadcast information
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/236Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
    • H04N21/23614Multiplexing of additional data and video streams
    • H04N21/23617Multiplexing of additional data and video streams by inserting additional data into a data carousel, e.g. inserting software modules into a DVB carousel
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/4302Content synchronisation processes, e.g. decoder synchronisation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/47End-user applications
    • H04N21/472End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content
    • H04N21/47214End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content for content reservation or setting reminders; for requesting event notification, e.g. of sport results or stock market
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/47End-user applications
    • H04N21/478Supplemental services, e.g. displaying phone caller identification, shopping application
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/47End-user applications
    • H04N21/482End-user interface for program selection
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/65Transmission of management data between client and server
    • H04N21/654Transmission by server directed to the client
    • H04N21/6543Transmission by server directed to the client for forcing some client operations, e.g. recording
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/80Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/85Assembly of content; Generation of multimedia applications
    • H04N21/858Linking data to content, e.g. by linking an URL to a video object, by creating a hotspot
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04HBROADCAST COMMUNICATION
    • H04H2201/00Aspects of broadcast communication
    • H04H2201/30Aspects of broadcast communication characterised by the use of a return channel, e.g. for collecting users' opinions, for returning broadcast space/time information or for requesting data
    • H04H2201/37Aspects of broadcast communication characterised by the use of a return channel, e.g. for collecting users' opinions, for returning broadcast space/time information or for requesting data via a different channel

Description

Signal receiving device and method, signal transmitting device and method, and program

The present technology relates to a signal receiving apparatus and method, a signal transmitting apparatus and method, and a program, and more particularly to a signal receiving apparatus and method, a signal transmitting apparatus and method, and a program that can reliably perform scheduled download of AV content.

In recent years, based on the popularity of digital broadcasting, signal reception of multi-channel or high-detailed television broadcasting has been generalized.

On the other hand, the use of the frequency band that can be used in digital broadcasting, not only the usual television broadcasting, but also the technical research and method of the higher-level broadcasting service pursued by the viewer.

As a function pursued by the viewer, it is possible to view and listen to the AV content when the viewer wants to view it. However, in a broadcast that is not two-way but one-way transmission, it is difficult to achieve on-demand viewing.

Therefore, in order to realize on-demand audio and video in a one-way transmission broadcast, there is research on NRT service: on the premise that the signal receiving device maintains a large-capacity storage device, the broadcasted AV content is temporarily recorded in the storage device and then played. (For example, refer to Patent Document 1).

The NRT (Non Real Time) service is not based on the immediate viewing and listening, and it is not necessary to synchronize the AV content with the broadcast time of the AV content, and the AV content is transmitted as a material by using a broadcast signal.

That is, in the NRT service, unlike the recording reservation of the AV content of the previous broadcast program, for example, the transmission band of the signal using the broadcast wave is large. In this case, the recording (download) can be completed in a shorter time. Further, for example, in the case where the transmission band of the signal of the broadcast wave is small, the download is completed in a longer time.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2011-41242

In the case of the reservation download of the AV content in the previous NRT service, it is necessary to obtain information about the download of the AV content which is called NRT-IT (NRT Information Table). A list of AV contents that can be reserved for download is described in the NRT-IT, and the desired AV content is selected from the list.

The NRT-IT is regularly transmitted with the AV content. If the NRT-IT is kept older by the signal receiving device, even if the AV content that can be reserved for downloading cannot be reserved, and before the NRT-IT is updated, it must be Waiting for an appointment to download. As a result, there is a possibility that the opportunity to reserve the download of the AV content is lost.

In view of such a situation, the present technology is capable of making a reservation download of an AV content and expanding an appointment downloading opportunity.

A signal receiving apparatus according to an aspect of the present invention includes: a signal receiving unit that receives AV content; and a detecting unit that detects an application that is transmitted together with the received AV content and that is executed in conjunction with the AV content. Program The triggering information related to the control; the obtaining unit, based on the detected trigger information, acquiring an application for selecting a non-instantaneously transmitted AV content that can be reserved for downloading; and a temporary reservation registration unit that utilizes the obtained The AV content selected by the application is registered as a temporary reservation; and the official reservation registration unit is available for reservation in the download information related to the download of the AV content that is periodically transmitted together with the AV content. When the identification code of the downloaded AV content matches the identification code of the AV content temporarily reserved, the AV content temporarily reserved is registered as a formal reservation.

When the download information is not recorded, the temporary reservation registration unit registers the selected AV content as a temporary reservation.

The above application selects the content of the non-instantly transmitted AV content that can be reserved for download by the list.

Furthermore, the control unit is configured to control the acquisition or activation of the application or the execution of the application during execution based on the detected instruction of the trigger information.

The signal receiving device can be a stand-alone device or an internal block constituting one device.

A signal receiving method or program according to one aspect of the present technology is a method or a program corresponding to the signal receiving device of one aspect of the present technology described above.

In a signal receiving apparatus and method, and a program of an aspect of the present technology, an AV content is received; and detection is performed together with the received AV content, and is related to control of an application for execution in conjunction with AV content. Trigger information; based on the detected trigger information, the acquisition is pre-selectable An application for downloading an AV content that is not immediately transmitted; an AV content selected by using the acquired application is registered as a temporary reservation; and AV content downloaded with the AV content and transmitted non-instantly In the case where the identification code of the AV content that can be reserved for download in the related download information coincides with the identification code of the AV content of the temporary reservation, the AV content of the temporary reservation is registered as a formal reservation.

A signal transmission device of an aspect of the present technology includes: a trigger information generating unit that generates trigger information related to control of an application executed in conjunction with the AV content in the signal receiving device; and a signal transmitting unit that generates the above The trigger information is transmitted together with the AV content; and the download information generating unit generates download information related to the download of the AV content that is not immediately transmitted; and the signal transmitting unit generates the generated download information and the AV content. It is transmitted regularly.

The instruction shown in the trigger information includes at least one of an instruction to control acquisition or activation of an application for downloading non-instantaneously transmitted AV content, or execution of the application in execution.

The signal transmission unit multiplexes the trigger information into a transport stream corresponding to the AV content and transmits the trigger information.

The signal transmission unit stores the trigger information in an adaptation field of a packet constituting a transport stream corresponding to the AV content.

The signal transmitting device can be a stand-alone device or an internal block constituting one device.

A signal transmission method or program of one aspect of the technology and the above-mentioned technology A method or program corresponding to a signal transmission device.

In a signal transmission apparatus and method, and a program of an aspect of the present technology, trigger information related to control of an application executed in conjunction with AV content in a signal receiving apparatus is generated; and the generated trigger information and AV content are And transmitting; generating download information related to downloading of non-instantly transmitted AV content; and transmitting the generated download information together with the AV content.

According to one aspect of the present technology, an scheduled download opportunity for AV content can be expanded.

Hereinafter, embodiments of the present technology will be described with reference to the drawings.

[Composition of broadcasting system]

Fig. 1 is a view showing a configuration example of a broadcasting system.

The broadcasting system 1 includes a broadcasting device 11, a signal receiving device 13, and a content distribution server 18.

The broadcasting device 11 is installed in a broadcasting station. The broadcast device 11 transmits AV content such as a program or a CM as a digital television broadcast signal. The digital television broadcast signal is formed by transmitting as a normal broadcast and an NRT broadcast.

The normal broadcast is a broadcast on the premise of immediate viewing and listening in the signal receiving device 13 that receives the broadcast signal. In addition, the NRT broadcast is based on the assumption that the AV content is not broadcast at the broadcast time of the AV content, and the AV content is transmitted as data by the broadcast signal. By.

Further, the broadcast device 11 transmits the trigger information as a command for instructing execution of the content for data broadcasting executed in conjunction with the AV content such as a program to be included in the digital television broadcast signal. In addition to the information indicating the type of the command, the trigger information includes the content for data broadcasting, that is, information indicating the location where the content for data broadcasting is acquired. In addition, the details of the trigger information will be described later.

Further, the broadcast device 11 periodically transmits information on downloading of AV content that is not instantaneously transmitted in the NRT broadcast (hereinafter referred to as download information) together with the AV content. In addition, as the download information, for example, the above-described NRT-IT will be described later.

The digital television broadcast signal transmitted from the broadcast device 11 is received by the signal receiving device 13 via the relay station 12.

The signal receiving device 13 is provided, for example, in a user's home. The signal receiving device 13 receives the normally broadcast digital television broadcast signal, and displays the AV content obtained from the digital television broadcast signal on the display 13A for viewing.

Further, when the signal receiving device 13 performs the scheduled download of the AV content, the reception of the digital television broadcast signal of the NRT broadcast is started at the broadcast start time of the reserved AV content, and the AV content obtained from the digital television broadcast signal is recorded in the In the storage device 14. Next, the signal receiving device 13 reads the AV content recorded in the storage device 14 and plays it, thereby viewing the AV content broadcast by the NRT broadcast.

Further, the signal receiving device 13 is connected to a LAN (Local Area Network: The LAN path 15 is set to be connectable to the Internet 17 via the router 16. The signal receiving device 13 obtains the trigger information from the digital television broadcast signal, and connects to the content distribution server 18 via the Internet 17 based on the acquisition of the content for broadcasting the information contained in the trigger information, and acquires the content for data broadcasting. Further, the content for data broadcasting is not limited to the method obtained via the Internet 17, and can be obtained, for example, from a multiplexed stream obtained by demodulating a digital television broadcast signal.

The signal receiving device 13 performs temporary reservation registration of the AV content based on the acquired content for data broadcasting, and then performs official reservation registration of the temporarily reserved AV content based on the download data periodically transmitted from the broadcasting device 11. The details of the reservation download using the content for data broadcasting (TDO content described later) will be described later.

The content distribution server 18 is installed in a broadcast station or the like. The content distribution server 18 generates content for broadcasting information for presenting a list of AV contents that can be reserved for download in the NRT broadcast. The content distribution server 18 issues the content for data broadcasting via the Internet 17 in accordance with the request for acquisition from the signal receiving device 13.

The broadcast system 1 is configured as described above.

In addition, since the content for data broadcasting is realized by executing the application supplied to the signal receiving device 13 by the computer of the signal receiving device 13, the content for data broadcasting is also referred to as a data broadcasting application or App (application software) for data broadcasting.

[Composition of broadcasting equipment]

Fig. 2 is a view showing a configuration example of a broadcasting apparatus.

The broadcast device 11 includes a video encoder 31, an audio encoder 32, a multiplexing unit 33, a trigger generating unit 34, a download information generating unit 35, and a sending unit 36.

The video encoder 31 encodes the video stream of the AV content, such as a program input from the previous stage, in accordance with a specific encoding method, and supplies the encoded video stream obtained as a result to the multiplexer 33. Further, as the encoding method of the video encoder 31, for example, there are an MPEG2 (Moving Picture Experts Group Phase 2) method, an H.264 method, and the like.

The audio encoder 32 encodes the audio stream corresponding to the video stream input to the video encoder 31 in accordance with a specific encoding method, and supplies the resultant encoded audio stream to the multiplexing unit 33. Further, as the encoding method of the audio encoder 32, for example, an AC3 (Audio Code number 3) method or an AAC (Advanced Audio Coding) method or the like is available.

The trigger generation unit 34 generates trigger information in cooperation with the progress of the video stream of the AV content input from the previous stage, and supplies the trigger information to the multiplex unit 33.

The download information generating unit 35 periodically generates download information such as NRT-IT based on the information on the AV content that can be reserved for download, and supplies it to the multiplex unit 33.

The multiplexed unit 33 supplies the encoded video stream from the video encoder 31, the encoded audio stream from the audio encoder 32, the trigger information from the trigger generating unit 34, and the download information from the download information generating unit 35.

The multiplexer 33 multiplexes the encoded video stream and the encoded audio stream, and further, the trigger information is multiplexed, and the multiplexed stream obtained as a result is supplied to the sending unit 36. Specifically, for example, multiplexing into TS (Transport Stream). Or, considering the digital distribution of digital TV broadcasts, it can be multiplexed into an ISO basic media file format (MP4) suitable for it.

Further, when the download information generating unit 35 supplies the download information, the multiplexer 33 multiplexes the downloaded information into a multiplexed stream.

The delivery unit 36 transmits the multiplexed stream supplied from the multiplex unit 33 as a digital television broadcast signal.

The broadcast device 11 is configured as described above.

[Composition of signal receiving device]

Fig. 3 is a view showing a configuration example of a signal receiving device.

The signal receiving device 13 includes a tuner 51, a multiplex separation unit 52, a video decoder 53, a video output unit 54, an audio decoder 55, an audio output unit 56, a trigger detecting unit 57, a control unit 58, a memory 59, and an operation unit. 60. The communication I/F 61, the cache memory 62, the App engine 63, the download information detecting unit 64, and the reservation download unit 65.

The tuner 51 receives and demodulates the digital television broadcast signal corresponding to the channel selected by the user, and supplies the multiplexed stream obtained as a result to the multiplex separation unit 52.

The multiplex separation unit 52 separates the multiplexed stream supplied from the tuner 51, and supplies the separated encoded video stream and encoded audio stream to the video decoder 53 and the audio decoder 55, respectively. Further, when the trigger information or the download information transmitted together with the multiplexed stream is detected, the trigger information and the download information are supplied to the trigger detecting unit 57 and the download information detecting unit 64, respectively.

The video decoder 53 performs the encoded video stream from the multiplex separation unit 52. The decoding is performed, and the video signal obtained as a result is supplied to the video output unit 54.

The video output unit 54 outputs the video signal supplied from the video decoder 53 to the subsequent stage (for example, the display 13A). Further, the video output unit 54 synthesizes the video signal of the data broadcasting application (hereinafter referred to as data broadcasting application) supplied from the App Engine 63 and the video signal supplied from the video decoder 53 to the subsequent stage.

The audio decoder 55 decodes the encoded audio stream from the multiplex separation unit 52, and supplies the resultant audio signal to the audio output unit 56.

The audio output unit 56 outputs the audio signal supplied from the audio decoder 55 to a subsequent stage (for example, a speaker).

The trigger detecting unit 57 supplies the multiplexed stream detecting trigger information separated by the multiplex separating unit 52 to the control unit 58.

The control unit 58 controls the operation of each unit of the signal receiving device 13 by executing a control program recorded in the memory 59. Moreover, the control unit 58 controls the acquisition, activation, event ignition, suspension, termination, and the like of the data broadcast app based on the trigger information supplied from the self-trigger detection unit 57.

The operation unit 60 accepts various operations from the user, and notifies the control unit 58 of the operation signal corresponding thereto.

The communication I/F 61 is connected to the content distribution server 18 via the Internet 17 in compliance with control from the App Engine 63. The App Engine 63 follows the control from the control unit 58 and acquires the data broadcast application from the content distribution server 18 via the communication I/F 61 and the Internet 17, and holds it in the cache memory 62.

The App Engine 63 follows the control from the control unit 58, and the read execution is maintained. The data broadcast app in the cache 62 is cached.

The download information detecting unit 64 detects the download information from the multiplexed stream separated by the multiplex separation unit 52, and supplies it to the control unit 58.

The control unit 58 analyzes the download information supplied from the download information detecting unit 64, and records the analysis result in the memory 59.

The reservation downloading unit 65 performs processing for reservation downloading of the AV content in accordance with the control from the control unit 58. The reservation download unit 65 includes a temporary reservation registration unit 71 and a formal reservation registration unit 72.

The temporary reservation registration unit 71 registers the desired AV content selected by the execution of the data broadcast app as a temporary reservation in accordance with the control from the control unit 58.

The official reservation registration unit 72 follows the control from the control unit 58 and the identification code of the AV content included in the download information analyzed by the control unit 58 is identical to the identification code of the AV content temporarily reserved by the temporary reservation registration unit 71. In this case, the temporarily reserved AV content is registered as a formal reservation.

When the reservation start time of the AV content registered by the official reservation is reached, the reservation download unit 65 controls the tuner 51 to download the AV content of the specific channel. The multiplexed stream received and demodulated by the tuner 51 is separated by the multiplex separation unit 52 and recorded in the storage device 14. In addition, when the AV content is acquired from the distribution server connected to the Internet 17, the reservation download unit 65 controls the communication I/F 61 to perform the specific channel when the reservation start time of the AV content registered by the official reservation is reached. Download of AV content. The AV content received by the communication I/F 61 is recorded in the storage device 14 in.

In the case of indicating the playback of the AV content recorded in the storage device 14, the video decoder 53 reads and decodes the encoded video stream recorded in the storage device 14, and outputs the resulting video signal to the video output unit 54 via the video output unit 54. Later paragraph. Further, the audio decoder 55 reads and decodes the encoded audio stream recorded in the storage device 14, and outputs the resultant audio signal to the subsequent stage via the audio output unit 56.

The signal receiving device 13 is configured as described above.

[NRT broadcast details]

Next, the details of the NRT broadcast are explained. In the NRT broadcast, there is a method in which a user selects and stores each AV content (hereinafter referred to as a Pull-type NRT broadcast), and on the basis of registration of a set of AV contents specified by the user. The signal receiving device 13 automatically receives two modes of storing such AV contents (hereinafter referred to as Push-type (push) NRT broadcasting).

Here, a Pull-type NRT broadcast will be described.

4 is a diagram showing a protocol stack including broadcast signals of NRT broadcasts and normal broadcasts.

As shown in FIG. 4, the lowermost level is set to a Physical Layer, and the frequency band of the broadcast wave allocated for the channel corresponds to it. The hierarchy adjacent to the upper level of the Physical Layer is set to TS (Transport Stream).

In the TS, the packet of the upper hierarchy is divided into packets of a fixed length called a transport packet, and the transport packet continues to be a transport stream. That is, the signal transmitted in the frequency band corresponding to one broadcast channel, all The part transmits using a transport packet having header information or the like corresponding to the broadcast channel.

The hierarchy adjacent to the upper level of the transport stream is set to Section or PES (Packetized Elementary Stream). For example, usually broadcasted AV content, the data played immediately is transmitted as a PES packet. In addition, the data transmitted by the file, the information of the control information, etc. are transmitted as a package of Section.

As shown in FIG. 4, Caption Coding, Audio Coding, and Video Coding are defined as the upper level of the PES corresponding to the type of the PES packet. Caption Coding is a package for storing information about subtitles of images. Audio Coding is a package for storing audio data, and Video Coding is a package for storing image data.

PSIP and PSI are specified as being adjacent to the upper level of the Section. The PSIP (Program and System Information Protocol) is set to have a hierarchy of VCT, NRT-IT, and the like. The data of the PSIP is configured to include VCT, NRT-IT, etc., and is periodically received by the signal receiving device 13. The PSI (Program Specific Information) is a hierarchy having a PAT (Program Association Table) and a PMT (Program Map Table).

Further, as a hierarchy above the Section, a DSM-CC (Digital Storage Media Command and Control) is indicated. The DSM-CC is used as an adaptation layer for transmitting IP packets on the MPEG2-TS of the broadcast stream. In addition, DSM-CC is specified as an ISO specification.

Interactive Data Coding is displayed as adjacent to the upper level of the DSM-CC. Mobile broadcasts can be implemented using data stored in Interactive Data Coding, Caption Coding, Audio Coding, and Video Coding. That is, by receiving the data, it is possible to receive a program for broadcasting a normal broadcast.

Further, IP is displayed as being adjacent to the upper layer of the DSM-CC. The IP shown here is the same as the IP in the TCI/IP protocol stack, and the IP packet is specified based on the IP address. NRT broadcasting is made by using IP packets. Of course, since the NRT broadcast is not provided as a communication but as a broadcast provider, it is not necessary to use the TCI/IP protocol stack as a communication protocol, but when the AV content is downloaded, the IP packet is formally used.

The upper layer adjacent to the IP is set to UDP, and as the upper level, FLUTE/ALC (Asynchronous Layered Coding Protocol)/LCT (Layered Coding Transport (Building Block)) is displayed. In other words, in the NRT broadcast, a packet specifying a port of UDP in the TCP/IP communication is transmitted, for example, by establishing a dialog using FLUTE (File Delivery over Unidirectional Transport). In addition, the details of FLUTE are specified as RFC3926.

Fig. 5 is a diagram showing an example of NRT-IT.

The NRT-IT (NRT Information Table) is a list of descriptors for each of the AV contents for recognizing NRT broadcasts broadcasted in each channel in the signal receiving apparatus 13.

As shown in FIG. 5, in the NRT-IT, information on the download of each AV content is described in the description area of the AV content unit. In the example of FIG. 5, in each of Content#1, Content#2, ..., Content#N, information such as Content ID, Distribution start/end, Content name, and Content URL is described in the description area.

The Content ID describes the ID used to identify the AV content. The ID is described by a specific text or numerical value or the like.

Distribution start/end describes information about the release schedule of AV content. As the distribution schedule, information indicating the broadcast start time and the broadcast end time of the AV content is described. Further, since the AV content is the AV content of the NRT broadcast, the broadcast start time and the broadcast end time are not the time at which the AV content is visually recognized, but the time at which the download of the AV content should be started and the time at which the download should be completed.

The Content name is information describing the name of the AV content. As the name, for example, the title of the AV content is described using a character string or a numerical value or the like.

The Content URL is information describing a URL (Uniform Resource Locator) of a place for specifically configuring the AV content.

In this way, in the description area of the NRT-IT, as the information about the AV content identified by the Content ID, the Distribution start/end, the Content name, and the Content URL are described, and the NRT-IT describing the information is used as the download information. Transfer.

In addition, in the description area of the NRT-IT, for example, information about the version or expiration date of the AV content may be described.

The NRT-IT system is constructed as described above.

In addition, the NRT-IT is disclosed in, for example, Patent Document 1 (Japanese Laid-Open Patent Publication No. 2011-41242).

[Details of triggering information]

Next, the details of the trigger information will be explained. The trigger information is used to control the information of the app for data broadcasting. Instructions for preload buffering, execution, injection events, pauses, and terminations are included in the trigger information.

The pre-buffer command (Pre-cache) is an instruction for instructing the data broadcast app to be acquired. Further, an execution command (Execute) is an instruction for instructing activation of the data broadcast app. Furthermore, the injection event command (Inject_event) is an instruction for causing an event to ignite in the application for data broadcasting during execution.

Suspend is a command to make the data broadcast in execution use the app to stop. Further, the terminating command (Terminate) is an instruction for ending the execution of the data broadcast by the App.

Fig. 6 is a state transition diagram of the data broadcasting App operating in the signal receiving device 13 in accordance with each of the preload buffering, execution, injection event, pause, and termination instructions.

As shown in FIG. 6, the state of the data broadcasting application is defined as any one of four types of transition to a Stopped state, a Ready state, an Active state, or a Suspended state. .

The end state refers to a state in which the data broadcast app is not acquired in the signal receiving device 13. The preparation state is a state in which the data broadcast app is in the signal receiving device 13 for the completion of the acquisition and has not yet been activated. The status in execution refers to the state in which the data broadcast application is started and executed. Resting state The execution of the app for the broadcast broadcast is interrupted, and the information indicating the state of the interrupt is maintained in the state of the back-off memory.

When the data broadcast app transitions to the end state (when it is not acquired by the signal receiving device 13), the trigger information of the preload buffer command is received, and the data broadcast app is acquired in accordance with the preload buffer command, and then transitions to the ready state.

When the data broadcast application is in the ready state, it receives the trigger information of the execution command, and starts the data broadcast application in compliance with the execution command, and then shifts to the execution state.

When the data broadcast app transitions to the end state (when it is not acquired by the signal receiving device 13), the trigger information of the execution command is received, and the data broadcast app is acquired in accordance with the execution command, and then the process transitions to the execution state. .

When the data broadcast App transitions to the execution state, it receives the trigger information of the pause command, and interrupts the execution of the data broadcast application in accordance with the pause command, and then shifts to the rest state.

When the data broadcast app transitions to the rest state, it receives the trigger information of the execution command, and restarts the interrupted data broadcast application in accordance with the execution command, and then shifts to the execution state.

When the data broadcast App transitions to the ready state, the execution state, or the rest state, it receives the trigger information of the termination command, and ends the execution of the data broadcast application in compliance with the termination command, and then transitions to the end state.

The data broadcasting application system changes its state as described above.

Figure 7 shows the situation in which the triggering information is multiplexed into TS.

In this case, as shown in Figure 7A, the PMT of TS (Program Map Table: Program Map Table) defines the descriptor of the trigger information in the descriptor, and describes the trigger information as shown in FIG. 7B. Specifically, the syntax of the trigger information is described in the position after the descriptor_length in FIG. 7B.

Alternatively, instead of the PMT descriptor, a descriptor for triggering information may be defined in, for example, a SIT (selection information table) descriptor.

FIG. 8 is a diagram showing a situation in which a trigger information is transmitted in a PCR (Program Clock Reference) packet of a TS of a digital television broadcast signal.

As shown in Figure 8, the trigger information is not stored in all PCR packets, but is stored in the PCR packet only at the appropriate time in conjunction with the AV content. The PCR packet is stored in the adaptation_field of the TS packet, and the trigger information is stored in the transport_private_data_byte following the PCR.

In addition, in FIGS. 7 and 8, an example in which the trigger information is multiplexed into the TS and transmitted and stored in the PCR is transmitted, but the method of storing and transmitting the trigger information is not limited thereto. For example, trigger information can be embedded in the image information itself. Further, as the instruction to trigger the information, the preload buffer, the execution, the injection event, the pause, and the termination are described as an example, but other instructions may be used.

Further, the trigger information is disclosed, for example, in the application filed by the applicant of the present application, namely, Patent Application No. 2011-041801 (filed on the filing date: February 28, 2009).

[Process of AV content transfer processing]

Next, the AV content transfer processing by the broadcast device 11 will be described with reference to the flowchart of FIG.

In step S11, the video encoder 31 encodes the video stream of the AV content, such as a program input from the previous stage, and supplies the encoded video stream obtained as a result to the multiplexer 33.

In step S12, the audio encoder 32 encodes the audio stream input from the previous stage, and supplies the resultant encoded audio stream to the multiplex section 33.

In step S13, the trigger generation unit 34 determines whether or not to transmit the trigger information. In the case where it is determined in step S13 that the trigger information is transmitted, the process proceeds to step S14.

In step S14, the trigger generation unit 34 generates trigger information corresponding to the progress of the video stream of the AV content input from the previous stage. On the other hand, in the case where it is determined in step S13 that the trigger information is not transmitted, step S14 is skipped, and the processing proceeds to step S15.

In step S15, the download information generating unit 35 determines whether or not to transmit NRT-IT (download information). In the case where it is determined in step S15 that the NRT-IT is transmitted, the process proceeds to step S16.

In step S16, the download information generating unit 35 generates NRT-IT based on the information on the AV content that can be reserved for download. On the other hand, in the case where it is determined in step S15 that the NRT-IT is not transmitted, step S16 is skipped, and the processing proceeds to step S17.

In step S17, the multiplexer 33 generates a multiplexed stream and supplies it to the delivery unit 36.

That is, in the multiplexing unit 33, the encoded video stream and the encoded audio stream are multiplexed, and the trigger information is also multiplexed when the trigger information is transmitted, and further, when the NRT-IT is transmitted, the NRT is transmitted. -IT has also been multiplexed.

In step S18, the delivery unit 36 transmits the multiplexed stream supplied from the multiplex unit 33 as a digital television broadcast signal. Thereafter, the process returns to step S11, and the processes described later are repeated.

As described above, when the AV content is transmitted in the broadcasting device 11, the trigger information or the NRT-IT is generated at a specific timing and transmitted together with the AV content.

[Process of AV content receiving processing]

Next, the AV content receiving process by the signal receiving device 13 will be described with reference to Figs. 10 and 11 .

In step S31, the tuner 51 receives the digital television broadcast signal demodulated corresponding to the channel selected by the user, and supplies it to the multiplex separation section 52.

In step S32, the multiplex separation unit 52 separates the multiplexed stream from the tuner 51, and supplies the separated encoded video stream and encoded audio stream to the video decoder 53 and the audio decoder 55. Further, in the case where the trigger information or the NRT-IT transmitted together with the multiplexed stream is detected, the multiplex separation unit 52 supplies the trigger information and the NRT-IT to the trigger detecting unit 57 and the download information detecting unit 64, respectively.

In step S33, the video decoder 53 decodes the encoded video stream separated by the multiplex separation unit 52, and outputs the resultant video signal to the display 13A via the video output unit 54.

In step S34, the audio decoder 55 will be separated by the multiplex separation unit 52. The encoded audio stream is decoded, and the resulting audio signal is output to a speaker (not shown) via the audio output unit 56.

Thereby, the AV content transmitted from the broadcast device 11 is received and viewed by the user.

In step S35, the trigger detecting unit 57 determines whether or not the trigger information is detected from the multiplexed stream separated by the multiplex separation unit 52.

When it is determined in step S35 that the trigger information is detected, the process proceeds to step S36. In step S36, the control unit 58 analyzes the command indicated by the detected trigger information.

In step S37, the control unit 58 determines whether or not the parsed instruction is a preload buffer. In the case where it is determined in step S37 that the command is the preload buffer, the process proceeds to step S38.

In step S38, the App engine 63 follows the control from the control unit 58 and acquires the data of the TDO content as the material broadcasting app specified by the App_id of the trigger information. The TDO content is retrieved from the content distribution server 18 and held in the cache memory 62. In addition, the App_id is an identification information of the App for data broadcasting acquired in correspondence with the trigger information.

Next, in step S39, it is determined whether the instruction is execution. For example, if the analyzed command is the preload buffer ("No" in step S39), the processing returns to step S31, and the above processing is repeated. When the trigger information is again detected ("Yes" in step S35), and it is determined that the command is executed ("Yes" in step S39), the processing proceeds to step S40.

In step S40, the App engine 63 follows the control from the control unit 58 to activate the TDO content held in the cache memory 62 as the App_id. App for specific data broadcasting.

In the case where the program material of the data broadcasting application specified by the App_id is not obtained (which is not present in the cache memory 62), the App Engine 63 acquires it and then starts it. Further, if there is an application for data broadcasting currently being executed, the App Engine 63 starts and starts.

In step S41, the App Engine 63 determines whether or not the information on the download of the AV content that can be temporarily reserved (hereinafter referred to as temporary reservation download information) is included in the TDO content. The temporary reservation download information shown in, for example, FIG. 12 is described in the TDO content.

Fig. 12 is a view showing a configuration example of the contents of the TDO.

As shown in FIG. 12, the TDO content is described by HTML (HyperText Markup Language).

The items element of 1 or more is described between the start tag and the end tag of the tdo element. Each item element includes a content name element, a content ID element, and a control url element.

The content name element is an element for describing the name of the AV content. In the example of Fig. 12, "sportsnews10thApril" is described.

The content ID element is an element for describing the ID of the AV content. In the example of Fig. 12, "01234567" is described.

The content url element is an element for describing the URL of a place where a specific AV content is configured. In the example of FIG. 12, "http://www.abc.com/NRT/sportsnews/940822.mp4" is described.

In this way, in the TDO content, as the temporary reservation download information for identifying the AV content that can be temporarily reserved, the ID and the name are described in each AV content. Weighing, and URL.

In addition, in the example of FIG. 12, although the temporary reservation download information of one AV content is described as a representative, when there are two or more AV contents that can be temporarily reserved, the item reservation is used to describe the temporary reservation corresponding thereto. Download information. Further, since the information for uniquely identifying the AV content is included in the temporary reservation download information, it is not necessary to include all the information of the ID, the name, or the URL, and other identification information can be used. Also, other tags than the tags of the tdo element or the items element can be used.

Returning to the flowchart of FIG. 10, it is determined in step S41 that the temporary reservation download information is included, and the processing proceeds to step S42. In step S42, the App Engine 63 supplies the temporary reservation download information to the video output unit 54, and displays it on the display 13A. For example, a list of AV contents that can be temporarily reserved as shown in FIG. 13 is displayed on the display 13A.

Returning to the flowchart of FIG. 10, in step S43, the control unit 58 determines whether or not the desired AV content has been selected based on the operation of the operation unit 60 by the user. In the case where it is determined in step S43 that the desired AV content has been selected, the process proceeds to step S44 of Fig. 11.

On the other hand, in the case where it is determined in step S43 that the desired AV content is not selected, the processing returns to step S31, and the above-described processing is repeated. In addition, the case where the trigger information is not detected ("No" in step S35) or the case where the temporary reservation download information is not included in the TDO content ("No" in step S41) is not performed because the desired AV content is not selected. Therefore, the process returns to step S31, and the above-described processing is repeated.

In step S44 of Fig. 11, the control unit 58 determines whether or not the NRT-IT periodically transmitted together with the AV content is recorded in the memory 59. In the case where it is determined in step S44 that the NRT-IT is not recorded, the process proceeds to step S45. For example, in the case where the radio wave barrier or information loss in the signal receiving device 13 (reception error) or the like is not received from the NRT-IT periodically transmitted by the broadcasting device 11, the older NRT-recorded in the broadcasting device 11 is kept. IT.

In step S45, the temporary reservation registration unit 71 follows the control from the control unit 58 and performs temporary reservation registration of the selected desired content. In addition, at this point of time, since the reservation is a temporary person, the temporary reservation registration is not a guarantee that the downloader is actually performed.

Further, in the signal receiving apparatus 13, when the new NRT-IT is transmitted from the broadcasting apparatus 11, the NRT-IT is received, and it is detected by the download information detecting section 64 (step S46). In step S47, the control unit 58 performs analysis of the newly received NRT-IT.

In step S48, based on the analysis result of the newly received NRT-IT, the control unit 58 determines whether or not the identification code of the AV content included in the NRT-IT matches the identification code of the temporarily reserved AV content.

In the determination processing, for example, the ID of the AV content of the temporary reservation described in the Content ID (FIG. 5) described in the NRT-IT (download information) and the content ID element of the TDO content (temporary reservation download information) is determined. (Figure 12) Is it consistent? Further, it is not limited to the Content ID, and it is also possible to perform determination processing using other identification information such as the NRT-IT of FIG. 5 and the Content name and Content URL which are common to the TDO content of FIG.

In step S48, it is determined that the identification codes are consistent, and the process progresses to step Step S49.

In step S49, the control unit 58 determines whether or not the temporarily reserved AV content is downloadable and viewable. In step S49, it is determined that the AV content of the temporary reservation is downloadable and viewable, and the process proceeds to step S50.

In step S50, the official reservation registration unit 72 follows the control from the control unit 58 and registers the temporarily reserved AV content as a formal reservation.

That is, in the case where the NRT-IT is not recorded, the selected desired AV content is temporarily registered as a temporary reservation. Further, when the NRT-IT is newly received, when the identification code of the AV content included in the NRT-IT matches the identification code of the AV content desired for the temporary reservation, the desired AV is temporarily reserved. The content is registered as a formal appointment.

Further, in step S44, it is determined that the NRT-IT is recorded, and the process proceeds to step S47. Further, in step S47, the control unit 58 analyzes the recorded NRT, and based on the analysis result, determines the identification code of the AV content included in the NRT-IT and the identification code of the selected desired AV content. Whether it is consistent (step S48). In the case where it is determined in step S48 that the identification codes of the AV contents match, the processing proceeds to step S49.

Further, the AV content is downloadable and viewable ("Yes" in step S49), and in step S50, the official reservation registration unit 72 follows the control from the control unit 58 to make the selected desired AV content a formal reservation. Log in.

That is, in the case where the NRT-IT is recorded, when the selected AV content is selected without the need for temporary reservation registration, and the identification code of the AV content coincides with the identification code of the AV content included in the NRT-IT, the AV content Log in for a formal appointment.

Further, in step S48, it is determined that the identification code of the AV content included in the NRT-IT does not match the identification code of the AV content, and the process proceeds to step S51. In step S51, the control unit 58 determines whether or not the AV content is temporarily reserved. In step S51, it is determined that the AV content has not been temporarily reserved, and the temporary reservation registration unit 71 performs temporary reservation registration of the AV content in accordance with the control from the control unit 58 (step S52). On the other hand, in the case where it is determined in step S51 that the AV content has been temporarily reserved, step S52 is skipped, and the process proceeds to step S53. Next, in the signal receiving device 13, the case where the new NRT-IT is transmitted from the broadcasting device 11 receives the NRT-IT (step S53).

When the temporary reservation registration has been performed (step S45) in step S54, the control unit 58 determines whether or not a certain period of time has elapsed after the temporary reservation registration has been performed. If it is determined in step S54 that a certain period of time has not elapsed, the process returns to step S47, and the identification code of the AV content and the identification code of the AV content included in the newly received NRT-IT are again compared.

On the other hand, if it is determined in step S54 that the certain time has elapsed, the temporary reservation registration is regarded as invalid and is released, and the process proceeds to step S55. In step S55, the control unit 58 controls the App engine 63 to display a message indicating that the download is not possible on the display 13A.

Further, for example, when the capacity required to record the AV content is insufficient for the storage device 14, etc., it is determined in step S49 that the AV content is not downloadable and viewable, and the message indicating that the download is not available is also displayed. In addition, when the capacity of the storage device 14 is insufficient, the official reservation registration can be performed.

After the processing of step S55 is completed, the content receiving processing of FIGS. 10 and 11 ends.

In other words, when a certain period of time has elapsed after the temporary reservation is registered, or the AV content is not downloadable and viewable, the message is displayed and the AV content is not downloaded.

In step S56, the trigger detecting unit 57 determines whether or not the trigger information is detected from the multiplexed stream separated by the multiplex separating unit 52.

In step S56, it is determined that the trigger information is detected, and the process proceeds to step S57. In step S57, the control unit 58 analyzes the command indicated by the detected trigger information.

In step S58, the control unit 58 determines whether or not the interpreted command is terminated. In the case where it is determined in step S58 that the instruction is terminated, the process proceeds to step S59.

In step S59, if the TDO content of the material broadcast application specified by the App_id of the trigger information is in execution, the App engine 63 ends. Then, the process proceeds to step S60.

When the trigger information is not detected ("No" in step S56) or the analyzed command is not terminated ("No" in step S58), the processing of the trigger information is skipped, and the process proceeds to step S60. Further, the processing of ending the TDO content using the trigger information is not limited to the completion of the official reservation registration, and may be performed, for example, after the temporary reservation registration is completed.

In step S60, the reservation download unit 65 determines whether or not the reservation start time of the AV content that has been officially registered is reached, and waits until the reservation start time. In addition, the start time of the reservation is described by NRT-IT. Distribution start/end is specific. In the case where it is determined in step S60 that the reservation start time has arrived, the process proceeds to step S61.

In step S61, the reservation downloading unit 65 controls the tuner 51 to download the AV content of the specific channel. The multiplexed stream system that receives the demodulation by the tuner 51 is separated by the multiplex separation unit 52 and recorded in the storage device 14. Further, in the storage device 14, information such as NRT-IT is also recorded together with the AV content. Further, when two or more AV contents are selected, the processing of steps S60, S61 is repeated, and all AV contents are downloaded. Further, when the AV content is acquired from the distribution server connected to the Internet 17, the reservation download unit 65 controls the communication I/F 61 to download the AV content of the specific channel, and records the download in the storage device 14. AV content.

After the download of the AV content is completed, in step S62, the control unit 58 controls the App engine 63 to display a list of the downloaded AV contents.

In step S63, based on the operation of the operation unit 60 by the user, the control unit 58 accepts the selection of the AV content to be played from the list of the displayed AV contents.

In the case where the AV content has been selected by the user, the video decoder 53 and the audio decoder 55 respectively read the encoded video stream and the encoded audio stream corresponding to the selected AV content from the storage device 14. Next, the video decoder 53 decodes the encoded video stream, and outputs the resultant video signal to the display 13A. Further, the audio decoder 55 decodes the encoded audio stream, and outputs the resultant audio signal to a speaker (not shown).

Thereby, the AV content downloaded from the broadcast device 11 and recorded in the storage device 14 is played and viewed by the user (step S64).

As described above, the signal receiving device 13 detects the trigger information transmitted together with the AV content, and acquires the TDO content as the data broadcasting app based on the detected trigger information, and selects the desired content by using the TDO content. AV content. Next, the desired AV content selected by the TDO content is registered as a temporary reservation, and the identification code of the downloadable AV content included in the periodically transmitted NRT-IT is identical to the identification code of the temporarily reserved AV content. In this case, the AV content of the temporary reservation is registered as a formal reservation.

Thereby, even if the NRT-IT held by the signal receiving device 13 is not the latest one, the temporary reservation registration of the desired AV content is performed in advance, and the temporary reservation registration is changed to the official reservation registration after the new reception of the NRT-IT. Therefore, there is no need to wait for an appointment to download before receiving the new NRT-IT. Therefore, the reservation downloading opportunity of the AV content is not lost, so that the scheduled download of the AV content of the NRT service can be surely performed. As a result, the subscription download opportunity can be expanded.

In addition, the broadcasting system 1 of the above-described FIG. 1 realizes data broadcasting that can be linked with AV content in a state where the frequency band for broadcast data broadcasting content in the broadcast frequency band for digital television broadcasting is not provided, for example, in the United States. Use the content. In the above description, the AV content is mainly described as an example in which the broadcast device 11 broadcasts a digital television broadcast signal. However, as described above, a dedicated distribution server may be provided via the Internet 17 release.

In the above description, the TDO content is described as the data broadcasting application, and an example is described in which the AV content temporarily reserved by the TDO content is displayed on the display 13A, but may not be displayed on the display. The selection is made in the device 13A. For example, the control unit 58 selects the AV content based on the pre-set conditions or the like by executing the TDO content.

Moreover, the TDO content is not only acquired, started, but also initiated from other TDO content based on the trigger information. Further, although the TDO content has been described using HTML, it is also composed of JavaScript (registered trademark), JPEG file, and PNG file. Further, as the description language of the TDO content, for example, other description languages such as BML (Broadcast Markup Language) may be used.

Further, in the above description, the Pull-type NRT broadcast has been described, but the Push-type NRT broadcast can also be applied in the same manner.

[Description of a computer using the technology]

One of the above series of treatments can be performed by hardware or by software. When a series of processing is performed by software, the program constituting the software is installed in a general-purpose computer or the like.

On the other hand, Fig. 14 is a view showing an example of a configuration of an embodiment of a computer in which a program for executing one of the above-described series of processes is installed.

The program can be recorded in advance in the recording unit 108 or the ROM (Read Only Memory) 102 of the hard disk or the like built in the computer 100.

In addition, the program can be stored (recorded) on a flexible disk, CD-ROM (Compact Disc Read Only Memory), MO (Magneto Optical) disc, and DVD (Digital Versatile Disc). : Removable media 111 such as digital audio and video discs, magnetic disks, and semiconductor memories. Such a removable medium 111 can be provided as a so-called packaged software.

Further, the program may be installed in the computer 100 in addition to the removable medium 111 as described above, or may be wirelessly transmitted to the computer 100 via a manual satellite for digital satellite broadcasting, or via a LAN (Local Area Network). A network such as a local area network or an Internet is transmitted to the computer 100 by wire, and the program transmitted by the communication unit 109 is received by the computer 100 and installed in the storage unit 108.

The computer 100 has a CPU (Central Processing Unit) 101 built therein. In the CPU 101, an input/output interface 105 is connected via the bus bar 104, and the CPU 101 is input to the interface 105, and when the user inputs an instruction by operating a keyboard 106, an input unit 106 composed of a mouse, a microphone, or the like. The program stored in the ROM 102 is executed accordingly. Alternatively, the CPU 101 transmits the program stored in the recording unit 108, the program transmitted from the satellite or the network, and received by the communication unit 109 to be installed in the recording unit 108, or the removable medium mounted in the disk drive 110. The program read and installed in the recording unit 108 is loaded into a RAM (Random Access Memory) 103 and executed. Thereby, the CPU 101 performs processing in accordance with the above-described flow or processing based on the configuration of the above-described block diagram. Then, the CPU 101 outputs the processing result from the output unit 107 including an LCD (Liquid Crystal Display), a speaker, or the like via the input/output interface 105 as needed, or transmits it from the communication unit 109, and records it in the recording unit. 108 et al.

Here, in the present specification, the processing steps of the program for causing the computer to perform various processes are described, and it is not necessary to process the chronological order along the order of the writing, and the processing is performed in parallel or individually. For example, parallel processing or target-based processing).

Further, the program can be processed by one computer, or can be distributed by a plurality of computers. Furthermore, the program can be executed by a computer that is transmitted to a remote location.

In addition, in this description, a system is a whole apparatus which consists of a plurality of apparatuses.

Further, the embodiments of the present invention are not limited to the above-described embodiments, and various modifications can be made without departing from the spirit and scope of the invention.

1‧‧‧Broadcasting system

11‧‧‧Broadcasting devices

13‧‧‧Signal receiving device

14‧‧‧Storage device

17‧‧‧Internet

18‧‧‧Content Publishing Server

33‧‧‧Multi-industry

34‧‧‧Trigger Generation Department

35‧‧‧Download Information Generation Department

36‧‧‧Send out

51‧‧‧Tuner

57‧‧‧Trigger Detection Department

58‧‧‧Control Department

60‧‧‧Operation Department

63‧‧‧App Engine

64‧‧‧Download Information Detection Department

65‧‧‧Reservation Download Department

71‧‧‧ Temporary Appointment Registration Department

72‧‧‧Official appointment registration department

100‧‧‧ computer

101‧‧‧CPU

Fig. 1 is a view showing a configuration example of a broadcasting system.

Fig. 2 is a view showing a configuration example of a broadcasting apparatus.

Fig. 3 is a view showing a configuration example of a signal receiving device.

Figure 4 is a diagram showing a protocol stack of broadcast wave signals.

Fig. 5 is a view showing a configuration example of NRT-IT.

Figure 6 is a state transition diagram of the application.

Figure 7 is a diagram illustrating an example of multiplexing trigger information into a transport stream.

Figure 8 is a conceptual diagram showing the transmission of trigger information in a PCR packet of a TS for transmission.

Fig. 9 is a flow chart showing the AV content transfer processing.

Fig. 10 is a flow chart showing the AV content receiving process.

Fig. 11 is a flow chart showing the AV content receiving process.

Fig. 12 is a view showing a configuration example of the contents of the TDO.

Fig. 13 is a view showing a display example of a list of AV contents that can be temporarily reserved.

Fig. 14 is a view showing a configuration example of a computer.

Claims (14)

  1. A signal receiving apparatus comprising: a signal receiving unit that receives AV content; and a detecting unit that detects trigger information related to control of an application that is transmitted together with the received AV content and that is executed in conjunction with the AV content; The acquisition unit obtains the application for selecting a non-instantaneously transmitted AV content that can be reserved for download based on the detected trigger information; and a temporary reservation registration unit that is selected by the acquired application The AV content is registered as a temporary reservation; and the official reservation registration unit is configured to be scheduled to be downloaded in the download information related to the download of the AV content that is periodically transmitted together with the AV content. When the identification code of the AV content matches the identification code of the AV content temporarily reserved, the AV content temporarily reserved is registered as a formal reservation.
  2. The signal receiving apparatus according to claim 1, wherein the temporary reservation registration unit registers the selected AV content as a temporary reservation when the download information is not recorded.
  3. The signal receiving device of claim 2, wherein the application program provides an interface for selecting the AV content that can be reserved for non-instant delivery according to the list.
  4. The signal receiving device of claim 3, further comprising a control unit that controls the application according to the detected instruction indicated by the trigger information The end of the above application in the acquisition or startup or execution of the program.
  5. The signal receiving device of claim 1, which is a person who receives a digital television broadcast signal, the digital television broadcast signal including the AV content and the identification code of the AV content that can be reserved for download.
  6. A signal receiving method for receiving a signal receiving device of an AV content, comprising the steps of: a signal receiving step of receiving the AV content; and a detecting step of detecting and transmitting the received AV content together with Trigger information related to control of an application executed in conjunction with the AV content; the obtaining step of acquiring the application for selecting a non-instantly transmitted AV content that can be reserved for download based on the detected trigger information; a registration step of registering the AV content selected by the acquired application as a temporary reservation; and a formal reservation registration step of the AV transmitted periodically and non-instantly transmitted together with the AV content When the identification code of the AV content that can be reserved for downloading included in the download information related to the download of the content is the same as the identification code of the AV content temporarily reserved, the AV content temporarily reserved is registered as a formal reservation.
  7. A signal receiving program for controlling a signal receiving device that receives AV content, and causing a computer to perform processing including a signal receiving step of receiving the AV content, and a detecting step of detecting and receiving the above AV content is transmitted together And triggering information related to control of the application executed in conjunction with the AV content; and obtaining, based on the detected trigger information, the application for selecting a non-instantaneously transmitted AV content that can be reserved for downloading; a reservation registration step of registering the AV content selected by the acquired application as a temporary reservation; and a formal reservation registration step of being periodically transmitted together with the AV content and being non-instantly transmitted When the identification code of the AV content that can be reserved for downloading included in the download information related to the download of the AV content coincides with the identification code of the AV content temporarily reserved, the AV content temporarily reserved is registered as a formal reservation. .
  8. A signal transmission device comprising: a trigger information generating unit that generates trigger information related to control of an application executed in conjunction with an AV content in a signal receiving device; and a signal transmitting unit that generates the trigger information generated as described above The AV content is transmitted together; and the download information generating unit generates download information related to the download of the AV content that is not immediately transmitted; and the signal transmitting unit periodically performs the generated download information together with the AV content. Transfer.
  9. The signal transmission device of claim 8, wherein the instruction indicated by the trigger information includes at least one acquisition or activation of the application for controlling the AV content for selecting a non-instantaneous transmission that can be reserved for downloading. The instruction to end the above application in action or execution.
  10. The signal transmission device of claim 8, wherein the signal transmission unit multiplexes the trigger information into a transport stream corresponding to the AV content for transmission.
  11. The signal transmission device of claim 8, wherein the signal transmission unit stores the trigger information in an adaptation field of a packet of a transport stream corresponding to the AV content.
  12. The signal transmitting apparatus of claim 8, wherein the application is used to select the AV content that can be reserved for download by non-instant transmission by the signal receiving apparatus; and the selected one of the AV contents that are not immediately transmitted When the registration information is registered as a temporary reservation, when the download information includes the identification code of the selected one of the AV contents that are not immediately transmitted as the temporary reservation, the temporary reservation is registered as a formal reservation. .
  13. A signal transmission method for transmitting a signal transmission device for AV content, comprising: a trigger information generating step of generating trigger information related to control of an application executed in conjunction with the AV content in the signal receiving device a signal transmission step of transmitting the generated trigger information together with the AV content; and a download information generating step of generating download information related to downloading of the AV content that is not immediately transmitted; and by using the signal The processing of the transfer step will generate the above download The information is transmitted periodically along with the above AV content.
  14. A signal transmission program for controlling a signal transmission device that transmits AV content, and causing a computer to execute a process including the following steps: a trigger information generation step generated in conjunction with the AV content in the signal receiving device a triggering information related to control of the application; a signal transmission step of transmitting the generated trigger information together with the AV content; and a downloading information generating step, which is related to downloading of the AV content that is not immediately transmitted And downloading the information; and the generated download information is periodically transmitted together with the AV content by the processing of the signal transmission step.
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